An extrusion molding device for processing raw materials for negative electrode graphite thermal insulation carbon bricks

Abstract

The present invention discloses an extrusion molding device for processing raw materials for negative electrode graphite thermal insulation carbon bricks, and specifically relates to the field of processing negative electrode graphite thermal insulation carbon bricks, including a rotary mold changing mechanism, wherein the rotary mold changing mechanism includes a fixed frame, an outer protective shell, a stepping motor and an inner turntable; the fixed frame is installed at the bottom of the outer protective shell, and the stepping motor is installed at the bottom center of the outer protective shell. The carbon brick edge damage prevention mechanism of the present invention adopts components such as an infrared heating top cover, an inner infrared heating plate, and an infrared heating side cover to perform high-temperature heating on the negative electrode graphite thermal insulation carbon bricks. At the same time, the high-temperature heating of the carbon brick surface helps to eliminate the negative pressure caused by the evaporation of internal water, reduce the internal stress of the carbon brick, and thus reduce the deformation and cracking risks of the carbon brick during transportation. Through the high-temperature reinforcement effect, the overall structure of the carbon brick becomes more stable, making it less susceptible to damage by external impact during transportation and stacking, thereby improving the quality of the finished carbon bricks.

Description

Technical Field

[0001] The invention relates to the technical field of processing negative electrode graphite thermal insulation carbon bricks, and more specifically, to an extrusion molding device for processing raw materials for negative electrode graphite thermal insulation carbon bricks. Background Art

[0002] Negative graphite insulation carbon brick is a special high-temperature refractory material, which is widely used for insulation and heat insulation in high-temperature environments such as industrial furnaces. Extrusion molding can form the required graphite insulation carbon brick shape by extrusion pressure in a specific mold.

[0003] A Chinese patent discloses a carbon brick forming machine, the patent application number is CN201921198146, and the disclosure content is that it includes a device body, the outer surface of the device body is respectively installed with a material taking door and an operating table, a first cylinder is fixed on the top of the device body, the output end of the first cylinder is connected to a support plate through a first piston rod running through the upper part of the device body, and the bottom of the support plate is connected to a forming plate through a connecting column;

[0004] However, both the above-mentioned carbon brick forming machine and the carbon brick forming machine currently on the market have the following problems. Once the carbon brick is extruded, it needs to be taken out of the extrusion machine. The graphite insulation carbon brick has not been fully solidified after extrusion, and the edges of the incompletely solidified carbon bricks are relatively fragile and easily damaged. In the subsequent transportation process, they are transported to the drying room. During this transfer process, if the edge of the carbon brick is subjected to external collision and extrusion, the edge is more likely to be damaged, which has a certain impact on the quality of the finished carbon brick.

[0005] To this end, we propose an extrusion molding device for processing raw materials for negative electrode graphite thermal insulation carbon bricks to solve the above problems. Summary of the invention

[0006] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides an extrusion molding device for processing raw materials for negative electrode graphite thermal insulation carbon bricks. The carbon brick edge anti-damage mechanism adopts components such as an infrared heating top cover, an internal infrared heating plate, and an infrared heating side cover to perform high-temperature heating on the negative electrode graphite thermal insulation carbon bricks. This heating method can quickly solidify the surface of the carbon bricks, increase the surface hardness, and form a solid shell on the surface of the carbon bricks. At the same time, the high-temperature heating of the carbon brick surface helps to eliminate the negative pressure caused by the evaporation of internal moisture and reduce the internal stress of the carbon bricks, thereby reducing the deformation and cracking risks of the carbon bricks during transportation. Through the high-temperature reinforcement effect, the overall structure of the carbon bricks becomes more stable, making it less susceptible to damage by external impact during transportation and stacking, thereby improving the quality of the finished carbon bricks to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an extrusion molding device for processing raw materials for negative electrode graphite thermal insulation carbon bricks, comprising a rotary die-changing mechanism, the rotary die-changing mechanism comprising a fixed frame, an outer protective shell, a stepper motor and an inner turntable; the fixed frame is installed at the bottom of the outer protective shell, the stepper motor is installed at the bottom center of the outer protective shell, the inner turntable is rotatably connected to the inner bottom of the outer protective shell and fixedly connected to the output shaft of the stepper motor; three carbon brick molding and taking-out mechanisms, the three carbon brick molding and taking-out mechanisms all comprise a lifting cylinder, a support plate, an extension plate and an infrared receiver; the bottom of the lifting cylinder is bolted to the top of the inner turntable, the bottom of the support plate is fixed to the output shaft of the lifting cylinder, the support plate is fixed to the adjacent sides of the extension plate, and the infrared receiver is installed on the extension plate;

[0008] The three carbon brick forming and taking-out mechanisms are equidistantly installed on the top of the inner turntable;

[0009] A carbon brick edge damage prevention mechanism, the carbon brick edge damage prevention mechanism comprises a low bracket plate, a top plate, an infrared heating top cover, a sealing cover, an outer metal plate, an inner infrared heating plate and an infrared heating side cover; a pressure cylinder is installed on the side plate of the low bracket plate, the output shaft of the pressure cylinder is fixed to the top of the top plate, the four bottom corners of the top plate are fixed to the top of the sealing cover by fixing rods, the outer metal plate and the top of the inner infrared heating plate are fixed to the inner bottom wall of the sealing cover from the outside to the inside, the infrared heating side cover is installed on the inner wall of the sealing cover and is located outside the outer metal plate, and the infrared heating top cover is installed on the inner top of the sealing cover.

[0010] In a preferred embodiment, an extrusion mechanism is installed on one side of the rotary mold changing mechanism, and the extrusion mechanism includes a high bracket plate, a pressure plate, four columns, an upper mold, a mold platform, a lower inner mold and a lower outer mold; an extrusion cylinder is installed at the bottom of the side plate of the high bracket plate, the top of the pressure plate is fixedly connected to the output shaft end of the extrusion cylinder, the top of the upper mold is installed at the bottom of the pressure plate, the top of the support plate of the carbon brick forming and taking out mechanism is tightly fitted with the bottom of the mold platform, the lower outer mold is fixedly installed on the inner wall of the mold platform, the lower inner mold is arranged in the middle of the lower outer mold and the bottom is fitted and supported by the support plate, the tops of the four columns are fixedly connected to the four corners of the bottom of the side plate of the high bracket plate, the bottoms of the four columns are fixedly connected to the four corners of the top of the mold platform, the four corners of the pressure plate are provided with sliding grooves adapted to the columns, and the four corners of the pressure plate are slidably connected to the outer wall of the column through corresponding sliding grooves.

[0011] In a preferred embodiment, the mold platform is provided with an inner mold disassembly and assembly mechanism, and the inner mold disassembly and assembly mechanism includes two micro-electric cylinders, two fixing plates and two receiving slots;

[0012] The two storage grooves are opened on both sides of the inner walls of the lower outer mold and the mold platform, the outer walls of the two fixed plates are adapted and sealed to the outer walls of the two storage grooves, the two micro-electric cylinders are symmetrically bolted to both sides of the outer walls of the mold platform, the electric rods of the micro-electric cylinders penetrate and slide inside the storage grooves, the electric rod ends of the two micro-electric cylinders are fixedly connected with driving rods, and the other ends of the two driving rods are respectively fixed to the outer side walls of the two fixed plates, an infrared transmitter is installed on one side of the side plate of the high bracket plate, and the infrared transmitter and the infrared receiver are symmetrically arranged, the four corners of the support plate are fixedly connected with guide sliding sleeves, the insides of the four guide sliding sleeves are slidably connected with guide sliding rods, the bottom of the guide sliding rod is fixedly connected to the top of the inner turntable, and a controller is installed on one side of the high bracket plate, and the electrical signal end of the controller is electrically connected to the electrical signal end of the infrared receiver.

[0013] Technical effects and advantages of the present invention:

[0014] The carbon brick edge damage prevention mechanism of the present invention adopts components such as an infrared heating top cover, an inner infrared heating plate and an infrared heating side cover to perform high-temperature heating on the negative electrode graphite insulation carbon bricks. This heating method can quickly solidify the surface of the carbon bricks, increase the surface hardness, and form a solid shell on the surface of the carbon bricks. At the same time, the high-temperature heating of the carbon brick surface helps to eliminate the negative pressure caused by internal moisture evaporation and reduce the internal stress of the carbon bricks, thereby reducing the deformation and cracking risks of the carbon bricks during transportation. Through the high-temperature reinforcement effect, the overall structure of the carbon bricks becomes more stable, making it less susceptible to damage by external impact during transportation and stacking, thereby improving the quality of the finished carbon bricks.

[0015] The cooperation of the carbon brick edge damage prevention mechanism of the present invention and the three carbon brick forming and taking-out mechanisms realizes efficient switching in the forming, damage prevention and product taking-out processes, wherein one mechanism is responsible for extrusion forming, another mechanism is responsible for damage prevention and reinforcement, and the third mechanism is responsible for taking out the finished product, thus saving production time.

[0016] During the extrusion molding, the present invention uses an anti-damage mechanism to perform high-temperature reinforcement treatment on the carbon bricks molded in the previous cycle to increase their surface hardness, thereby ensuring their stability during subsequent transportation to the drying room. In addition, the cyclic work of the three carbon brick molding and removal mechanisms ensures the production rhythm and improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram from one perspective of an extrusion molding device for processing raw materials for negative electrode graphite thermal insulation carbon bricks.

[0018] Figure 2 This is a structural schematic diagram from another perspective of an extrusion molding device for processing raw materials for negative electrode graphite thermal insulation carbon bricks.

[0019] Figure 3It is a schematic diagram of the structure of the inner mold disassembly and assembly mechanism of the present invention.

[0020] Figure 4 It is a schematic diagram of the structure of the rotary mold changing mechanism of the present invention.

[0021] Figure 5 It is a schematic diagram of the split structure of the carbon brick edge damage prevention mechanism of the present invention.

[0022] Figure 6 It is a schematic diagram of the structure of the outer metal plate and the inner infrared heating plate of the present invention.

[0023] Figure 7 It is a schematic diagram of the overall structure of the carbon brick edge damage prevention mechanism of the present invention.

[0024] The accompanying drawings are marked as follows: 10, extrusion mechanism; 11, high bracket plate; 13, extrusion cylinder; 14, pressing plate; 15, column; 16, upper mold; 17, mold table; 18, lower inner mold; 19, lower outer mold; 20, inner mold disassembly and assembly mechanism; 21, micro-electric cylinder; 22, driving rod; 23, fixing plate; 25, storage groove; 30, carbon brick forming and taking out mechanism; 31, lifting cylinder; 32, support plate; 33, guide sleeve; 34, extension plate; 3 5. Infrared receiver; 36. Infrared transmitter; 37. Guide slide rod; 40. Rotary mold changing mechanism; 41. Fixed frame; 42. Outer protective shell; 43. Stepper motor; 44. Inner turntable; 50. Carbon brick edge damage prevention mechanism; 51. Low bracket plate; 52. Pressure cylinder; 53. Top plate; 54. Infrared heating top cover; 55. Sealing cover; 57. Outer metal plate; 58. Inner infrared heating plate; 59. Infrared heating side cover; 61. Controller. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example 1

[0027] Refer to the instruction manual Figure 1-7 An extrusion molding device for processing raw materials for negative electrode graphite thermal insulation carbon bricks according to an embodiment of the present invention comprises a rotary die-changing mechanism 40, the rotary die-changing mechanism 40 comprises a fixed frame 41, an outer protective shell 42, a stepper motor 43 and an inner turntable 44; the fixed frame 41 is installed at the bottom of the outer protective shell 42, the stepper motor 43 is installed at the bottom center of the outer protective shell 42, and the inner turntable 44 is rotatably connected to the inner bottom of the outer protective shell 42 and fixedly connected to the output shaft of the stepper motor 43;

[0028] Three carbon brick forming and taking out mechanisms 30, each of which includes a lifting cylinder 31, a support plate 32, an extension plate 34 and an infrared receiver 35; the bottom of the lifting cylinder 31 is bolted to the top of the inner turntable 44, the bottom of the support plate 32 is fixed to the output shaft of the lifting cylinder 31, the support plate 32 is fixed to the adjacent side of the extension plate 34, and the infrared receiver 35 is installed on the extension plate 34;

[0029] Three carbon brick forming and taking-out mechanisms 30 are equidistantly installed on the top of the inner turntable 44;

[0030] The carbon brick edge damage prevention mechanism 50 includes a low bracket plate 51, a top plate 53, an infrared heating top cover 54, a sealing cover 55, an outer metal plate 57, an inner infrared heating plate 58 and an infrared heating side cover 59; a pressure cylinder 52 is installed on the side plate of the low bracket plate 51, the output shaft of the pressure cylinder 52 is fixed to the top of the top plate 53, the bottom four corners of the top plate 53 are fixed to the top of the sealing cover 55 through fixing rods, the outer metal plate 57 and the top of the inner infrared heating plate 58 are fixed to the inner bottom wall of the sealing cover 55 from the outside to the inside, and the infrared heating side cover 59 is installed on the inner wall of the sealing cover 55 And it is located outside the outer metal plate 57, and the infrared heating top cover 54 is installed on the inner top of the sealing cover 55. High-temperature heating can make the surface of the carbon brick evaporate quickly, prompting the binder material to solidify quickly to form a harder surface, which can increase the overall strength and hardness of the carbon brick and reduce the fragility of the edge of the carbon brick, thereby reducing the damage of the carbon brick by external forces during transportation. The lifting cylinder 31 drives its support plate 32 and the product to move upward, and the pressure cylinder 52 is started through the controller 61, so that its output shaft drives the top plate 53 to move downward, so that the bottom of the sealing cover 55 fits against the edge top of the support plate 32. At this time, the infrared heating top cover 54 is located on the top of the negative electrode graphite insulation carbon brick, the outer metal plate 57 is located on the outer wall of the negative electrode graphite insulation carbon brick, the inner infrared heating plate 58 is located on the hollow inner wall of the negative electrode graphite insulation carbon brick, and the negative electrode graphite insulation carbon brick is sealed by the sealing cover 55. The outside of the negative electrode graphite insulation carbon brick is heated at high temperature through the action of the infrared heating top cover 54, the inner infrared heating plate 58 and the infrared heating side cover 59, which helps to quickly solidify the surface and increase the surface hardness.

[0031] Example 2

[0032] See also Figure 1 , which is different from Example 1 in that:

[0033] like Figure 1 As shown, an extrusion mechanism 10 is installed on one side of the rotary die-changing mechanism 40, and the extrusion mechanism 10 includes a high support plate 11, a pressing plate 14, four columns 15, an upper die 16, a die table 17, a lower inner die 18 and a lower outer die 19;

[0034] The bottom of the side plate of the high bracket plate 11 is installed with an extrusion cylinder 13, the top of the pressing plate 14 is fixedly connected to the output shaft end of the extrusion cylinder 13, the top of the upper mold 16 is installed at the bottom of the pressing plate 14, the top of the support plate 32 of a carbon brick forming and taking-out mechanism 30 is tightly fitted with the bottom of the mold platform 17, the lower outer mold 19 is fixedly installed on the inner wall of the mold platform 17, the lower inner mold 18 is arranged in the middle of the lower outer mold 19 and the bottom is fitted and supported by the support plate 32, and the tops of the four columns 15 are fixedly connected to the side plates of the high bracket plate 11 At the four corners of the bottom, the bottoms of the four columns 15 are fixedly connected to the four corners of the top of the mold platform 17. The four corners of the pressing plate 14 are provided with sliding grooves adapted to the columns 15. The four corners of the pressing plate 14 are slidably connected to the outer walls of the columns 15 through the corresponding sliding grooves. The stepper motor 43 is controlled to start so that its output shaft drives the inner turntable 44 to rotate inside the outer protective shell 42. The stepper motor 43 is controlled by the controller 61 to rotate 120°, so that the next carbon brick forming and removal mechanism 30 replaces the currently used carbon brick forming and removal mechanism 30.

[0035] Example 3

[0036] See also Figure 3 , which is different from Embodiments 1 and 2 in that:

[0037] like Figure 3 As shown, an inner mold disassembly and assembly mechanism 20 is provided on the mold platform 17, and the inner mold disassembly and assembly mechanism 20 includes two micro-electric cylinders 21, two fixing plates 23 and two receiving grooves 25;

[0038] Two receiving grooves 25 are opened on both sides of the inner walls of the lower outer mold 19 and the mold platform 17. The outer walls of the two fixed plates 23 are adapted and sealed to the outer walls of the two receiving grooves 25. The two micro-electric cylinders 21 are symmetrically bolted to both sides of the outer wall of the mold platform 17. The electric rods of the micro-electric cylinders 21 penetrate and slide inside the receiving grooves 25. The electric rod ends of the two micro-electric cylinders 21 are fixedly connected with driving rods 22. The other ends of the two driving rods 22 are respectively fixed to the outer side walls of the two fixed plates 23. By starting the micro-electric cylinder 21, its electric rod pushes the fixed plate 23 out of the receiving groove 25, and clamps and fixes the upper part of the outer wall of the lower inner mold 18 until the next support plate 32 comes to support it, and then controls the micro-electric cylinder 21 to drive the fixed plate 23 to be retracted into the receiving groove 25 and sealed with the edge of the receiving groove 25.

[0039] Example 4

[0040] See also Figure 1-3 , which is different from Embodiments 1, 2 and 3 in that:

[0041] like Figure 1 and 3As shown, an infrared transmitter 36 is installed on one side of the side plate of the high bracket plate 11, and the infrared transmitter 36 and the infrared receiver 35 are symmetrically arranged. A controller 61 is installed on one side of the high bracket plate 11, and the electrical signal end of the controller 61 is electrically connected to the electrical signal end of the infrared receiver 35. The controller 61 monitors the position and state of the carbon brick forming and taking-out mechanism 30 in real time by receiving the signal from the infrared receiver 35, and determines whether the carbon brick forming and taking-out mechanism 30 is located in the required working position through the controller 61. In the control of the extrusion molding process, the controller 61 is used to coordinate the operation of the entire production line, and can control the rotation of the stepper motor 43 to make the mold changing process between the three carbon brick forming and taking-out mechanisms 30 more efficient. In addition, the controller 61 also controls the working state and pressure of the extrusion cylinder 13, the lifting cylinder 31, the micro-electric cylinder 21, and the pressure cylinder 52 during the entire production process to ensure the stability and safety of the device operation.

[0042] like Figure 2 As shown, the four corners of the support plate 32 are fixedly connected with guide sliding sleeves 33, and the interiors of the four guide sliding sleeves 33 are slidably connected with guide sliding rods 37. The bottom of the guide sliding rod 37 is fixedly connected to the top of the inner turntable 44, thereby increasing the stability of the support plate 32 during operation.

[0043] The working principle of the present invention is: during the working process of the extrusion mechanism 10, the raw material to be processed is first placed between the lower outer die 19 and the lower inner die 18, so that it is located in the working area of ​​the extrusion mechanism 10. Subsequently, by controlling the operation of the extrusion cylinder 13, the pressing plate 14 is pressed down and drives the upper die 16, so that the bottom of the upper die 16 is inserted and extruded into the die cavity between the lower outer die 19 and the lower inner die 18. Then, by controlling the pressure and time of the extrusion cylinder 13, the extrusion molding of the raw material is realized. During the extrusion process, the raw material is subjected to pressure between the upper die 16 and the lower outer die 19 and the lower inner die 18, and gradually forms the shape and size of the negative electrode graphite insulation carbon brick. After the extrusion is completed, the extrusion cylinder 13 is opened to make the pressing plate 14 rise again, and drive the upper die 16 and the lower outer die 1 9 is separated from the lower inner mold 18. At this time, the formed carbon brick is located on the current support plate 32. By starting the micro-electric cylinder 21, its electric rod pushes the fixing plate 23 out of the storage groove 25, and the upper part of the outer wall of the lower inner mold 18 is clamped and fixed until the next support plate 32 is supported. Next, by controlling the current lifting cylinder 31 to drive the support plate 32 to move downward, the support plate 32 drives the formed negative graphite insulation carbon brick to move down to the bottom of the separation mold platform 17, and the four guide sleeves 33 on the edge of the support plate 32 slide on the outer side of the guide rod 37. The wall is further maintained to stabilize the support plate 32 and the negative graphite insulation carbon bricks. Then, the stepper motor 43 is controlled to start, so that its output shaft drives the inner turntable 44 to rotate inside the outer protective shell 42. The stepper motor 43 is controlled by the controller 61 to rotate 120°, so that the next carbon brick forming and taking-out mechanism 30 replaces the currently used carbon brick forming and taking-out mechanism 30. The infrared transmitter 36 on one side of the high bracket plate 11 is symmetrical with the infrared receiver 35 on the mobile carbon brick forming and taking-out mechanism 30 to generate an output electrical signal, so that the controller 61 controls the stepper motor 43 to rotate 120°. The machine 43 stops moving, and the controller 61 controls the rotation of the stepping motor 43, and the infrared receiver 35 and the infrared transmitter 36 generate electrical signals to ensure the correctness of the trajectory. The carbon brick forming and removal mechanism 30 with negative electrode graphite insulation carbon bricks moves to the bottom of the carbon brick edge damage prevention mechanism 50, and then the lifting cylinder 31 drives its support plate 32 and the product to move upward. The pressure cylinder 52 is started by the controller 61, so that its output shaft drives the top plate 53 to move downward, so that the bottom of the sealing cover 55 is in contact with the top edge of the support plate 32.At this time, the infrared heating top cover 54 is located on the top of the negative graphite insulation carbon brick, and the outer metal plate 57 is located on the outer wall of the negative graphite insulation carbon brick, the inner infrared heating plate 58 is located on the hollow inner wall of the negative graphite insulation carbon brick, and the negative graphite insulation carbon brick is sealed by the sealing cover 55. The outside of the negative graphite insulation carbon brick is heated at high temperature by the infrared heating top cover 54, the inner infrared heating plate 58 and the infrared heating side cover 59, which helps to quickly solidify the surface and increase the surface hardness. It is not only beneficial to reduce the deformation and cracking risks of the carbon bricks, but also can make the carbon bricks more solid and stable during transportation and stacking. Finally, the controller 61 controls the current lifting cylinder 31 to start and drive the support plate 32 and the product to move down, and then rotates to the next position to take out the negative graphite insulation carbon brick, so that the three carbon brick forming and taking out mechanisms 30 rotate in a cycle, extrusion molding, damage prevention and product taking work, and are used as replacements in turn.

[0044] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0045] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0046] Finally: The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An extrusion molding device for processing raw materials for negative electrode graphite thermal insulation carbon bricks, characterized in that: The invention comprises a rotary mold changing mechanism (40), wherein the rotary mold changing mechanism (40) comprises a fixed frame (41), an outer protective shell (42), a stepping motor (43) and an inner turntable (44); the fixed frame (41) is mounted on the bottom of the outer protective shell (42), the stepping motor (43) is mounted at the bottom center of the outer protective shell (42), and the inner turntable (44) is rotatably connected to the inner bottom of the outer protective shell (42) and fixedly connected to the output shaft of the stepping motor (43); Three carbon brick forming and removing mechanisms (30), each of the three carbon brick forming and removing mechanisms (30) comprising a lifting cylinder (31), a support plate (32), an extension plate (34) and an infrared receiver (35); the bottom of the lifting cylinder (31) is bolted to the top of the inner turntable (44), the bottom of the support plate (32) is fixed to the output shaft of the lifting cylinder (31), the support plate (32) is fixed to the adjacent side of the extension plate (34), and the infrared receiver (35) is installed on the extension plate (34); The three carbon brick forming and removing mechanisms (30) are equidistantly distributed and installed on the top of the inner turntable (44); A carbon brick edge damage prevention mechanism (50), the carbon brick edge damage prevention mechanism (50) comprising a low support plate (51), a top plate (53), an infrared heating top cover (54), a sealing cover (55), an outer metal plate (57), an inner infrared heating plate (58) and an infrared heating side cover (59); a pressure cylinder (52) is installed on the side plate of the low support plate (51), the output shaft of the pressure cylinder (52) is fixed to the top of the top plate (53), the bottom four corners of the top plate (53) are fixed to the top of the sealing cover (55) through fixing rods, the top of the outer metal plate (57) and the inner infrared heating plate (58) are fixed to the inner bottom wall of the sealing cover (55) from the outside to the inside, the infrared heating side cover (59) is installed on the inner wall of the sealing cover (55) and is located outside the outer metal plate (57), and the infrared heating top cover (54) is installed on the inner top of the sealing cover (55).

2. The extrusion molding device for processing raw materials for negative electrode graphite thermal insulation carbon bricks according to claim 1 is characterized in that: An extrusion mechanism (10) is installed on one side of the rotary die-changing mechanism (40), and the extrusion mechanism (10) comprises a high support plate (11), a pressing plate (14), four columns (15), an upper die (16), a die table (17), a lower inner die (18) and a lower outer die (19); An extrusion cylinder (13) is installed at the bottom of the side plate of the high bracket plate (11), the top of the pressing plate (14) is fixedly connected to the output shaft end of the extrusion cylinder (13), and the top of the upper mold (16) is installed at the bottom of the pressing plate (14).

3. The extrusion molding device for processing raw materials for negative electrode graphite thermal insulation carbon bricks according to claim 2 is characterized in that: The top of a support plate (32) of the carbon brick forming and removing mechanism (30) is tightly fitted with the bottom of the die table (17), the lower outer die (19) is fixedly mounted on the inner wall of the die table (17), and the lower inner die (18) is arranged in the middle of the lower outer die (19) and its bottom is fitted and supported by the support plate (32).

4. The extrusion molding device for processing raw materials for negative electrode graphite thermal insulation carbon bricks according to claim 3 is characterized in that: The tops of the four columns (15) are fixedly connected to the four corners of the bottom of the side plate of the high bracket plate (11), the bottoms of the four columns (15) are fixedly connected to the four corners of the top of the mold platform (17), and the four corners of the pressing plate (14) are provided with sliding grooves adapted to the columns (15), and the four corners of the pressing plate (14) are slidably connected to the outer walls of the columns (15) through the corresponding sliding grooves.

5. The extrusion molding device for processing raw materials for negative electrode graphite thermal insulation carbon bricks according to claim 2, characterized in that: An inner mold disassembly and assembly mechanism (20) is provided on the mold platform (17), and the inner mold disassembly and assembly mechanism (20) comprises two micro-electric cylinders (21), two fixing plates (23) and two storage grooves (25); The two receiving grooves (25) are formed on both sides of the inner walls of the lower outer mold (19) and the mold platform (17), and the outer walls of the two fixing plates (23) are adapted and sealed to the outer walls of the two receiving grooves (25).

6. The extrusion molding device for processing raw materials for negative electrode graphite thermal insulation carbon bricks according to claim 5, characterized in that: The two micro-electric cylinders (21) are symmetrically bolted to the two sides of the outer wall of the mold platform (17); the electric rods of the micro-electric cylinders (21) penetrate and slide inside the storage groove (25); and the ends of the electric rods of the two micro-electric cylinders (21) are fixedly connected to the driving rods (22).

7. The extrusion molding device for processing raw materials for negative electrode graphite thermal insulation carbon bricks according to claim 6, characterized in that: The other ends of the two driving rods (22) are respectively fixed to the outer side walls of the two fixing plates (23).

8. The extrusion molding device for processing raw materials for negative electrode graphite thermal insulation carbon bricks according to claim 2, characterized in that: An infrared transmitter (36) is installed on one side of the side plate of the high bracket plate (11), and the infrared transmitter (36) and the infrared receiver (35) are symmetrically arranged.

9. The extrusion molding device for processing raw materials for negative electrode graphite thermal insulation carbon bricks according to claim 1, characterized in that: The four corners of the support plate (32) are fixedly connected to guide sliding sleeves (33), the interiors of the four guide sliding sleeves (33) are slidably connected to guide sliding rods (37), and the bottoms of the guide sliding rods (37) are fixedly connected to the top of the inner turntable (44).

10. The extrusion molding device for processing raw materials for negative electrode graphite thermal insulation carbon bricks according to claim 2, characterized in that: A controller (61) is installed on one side of the high bracket plate (11), and an electrical signal end of the controller (61) is electrically connected to an electrical signal end of an infrared receiver (35).

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